NEET2026ChemistryChapterActual
Match List I with List II regarding the properties of lanthanoid ions: List I List II A Ce ⁴⁺ 1 Strong reducing agent in aqueous solution B Eu ²⁺ 2 Oxidising agent with 4f⁷ configuration C La ³⁺ 3 Diamagnetic and highly stable in aqueous medium D Tb ⁴⁺ 4 Oxidising agent widely used in volumetric analysis Choose the correct answer from the options given below:
Options
- AA-2, B-1, C-3, D-4
- BA-4, B-1, C-3, D-2
- CA-4, B-3, C-1, D-2
- DA-1, B-4, C-3, D-2
Correct answer
B. A-4, B-1, C-3, D-2
Step-by-step solution
Ce ⁴⁺ has a 4f⁰ configuration and acts as a good oxidising agent. It is widely used in volumetric analysis. Eu ²⁺ has a 4f⁷ configuration. It tends to change to the more stable +3 oxidation state by losing an electron, acting as a strong reducing agent in aqueous solution. La ³⁺ has a 4f⁰ configuration with no unpaired electrons. It is diamagnetic and highly stable in aqueous medium. Tb ⁴⁺ has a 4f⁷ configuration. It acts as an oxidising agent as it tends to gain an electron to achieve the more stable +3 oxidation